Question: What is the quasar with the highest redshift whose discoverer or inventor is William Herschel?
Paraphrase: What quasar did William Herschel invent with the highest redshift?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q83373 . ?ent wdt:P1090 ?obj . ?ent wdt:P61 wd:Q14277 } ORDER BY DESC(?obj)LIMIT 5 
Answer: NGC 5993, NGC 7720, NGC 6150, NGC 5352, NGC 5352